Crank Rear Oil Seal Conversion 1275cc Midget & Sprite engines only. This kit will NOT fit 1275cc Morris Marina or Ital engines. For 1275cc Marina/Ital engines use part n. 10M800B. Please note: This conversion is intended as an upgrade for the A-series engine for fitment during a full engine rebuild. It will not work as a 'sticking plaster' to prevent oil leaks on a worn engine.